diff --git a/resources/dictionaries/en/ambiguous_expansions.txt b/resources/dictionaries/en/ambiguous_expansions.txt
index 4aa05c6d..5861be1c 100644
--- a/resources/dictionaries/en/ambiguous_expansions.txt
+++ b/resources/dictionaries/en/ambiguous_expansions.txt
@@ -1,3 +1,4 @@
+arc
 e
 n
 s